Cannula tube



FIG. 1 is a perspective view of a cannula tube showing my new design;

FIG. 2 is a left side elevational view thereof, a right side elevational view being a mirror image thereof;

FIG. 3 is a front elevational view thereof, a rear elevational view being a mirror image thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is an alternative embodiment of the design shown in FIG. 1 thereof.

The broken lines in the figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a cannula tube, as shown and described. 